Abstract
The problem of the dynamic response of a magnetic system to pulsed laser heating was addressed. The magnetic system is modeled at the atomistic level, using a classical spin Hamiltonian with the Heisenberg form of the exchange interaction and a local uniaxial anisotropy. The material parameters used corrersponds to permalloy. It was shown that the rapid decrease of the magnetization is predicted naturally by a simple atomistic model based Landau-Lifshitz-Gilbert (LLG) equation with Langevin dynamics.
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